This is real CO2 heat pump water heater, with Inverter technology.
 

CO2 maximum security and enviromental care

carbon dioxide, the operation fluid is non toxic, non flammable, had zero ambient impat(ODP=0 GWP=1)

High efficiency 4.5

High temperatuer water output : up to 90 Celsius 

water is heated with high efficiency up to temperature much higher than traditional heat pump working with HFC(R410,R134a....etc)

Low ambient working also in high efficiency up to 3.0, much higher than tranditional heat pump or EVI heat pump,-25 celsius even working good

Low storage volumes

The high temperature reached together in on passage (once through) make possible the usage of satisfied storage tanks, this allows:

-Extremely reduced storage tank

-High storage temperature deletes risk of legionella and the related periodical maintenance and remediation